know ye not that your body is the temple of the Holy Ghost which is in you, which ye have of God, and ye are not your own?For ye are bought with a price: therefore glorify God in your body, and in your spirit, which are God's.
The lukewarm are those who claim to know God but live as though He doesn’t exist. They may go to church, but their religion is self-righteous complacency. They may claim to be Christians, but their hearts are unchanged, and their hypocrisy is sickening to God. But our Lord is gracious and long-suffering. He will always receive to Himself even the most lukewarm Christian who comes to Him in repentance. http://www.gotquestions.org/Jesus-lukewarm-faith.html